63

I am trying to get the ipaddress from a hostname using Powershell, but I really can't figure out how.

Any help?

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1
  • Not having a windows machine I can't be sure, but isn't either nslookup or dig available? Commented Dec 28, 2011 at 20:34

12 Answers 12

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91

You can get all the IP addresses with GetHostAddresses like this:

$ips = [System.Net.Dns]::GetHostAddresses("yourhosthere")

You can iterate over them like so:

[System.Net.Dns]::GetHostAddresses("yourhosthere") | foreach {echo $_.IPAddressToString }

A server may have more than one IP, so this will return an array of IPs.

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1 Comment

$ip = [System.Net.Dns]::GetHostAddresses("yourhosthere")[0] will ensure you get only one IP address if you are sure it resolves
42

this is nice and simple and gets all the nodes.

$ip = Resolve-DNSName google.com
$ip

also try inputting an ip instead of a domain name and check out those results too!

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5 Comments

Under the hood how does this differ to [System.Net.Dns]::GetHostAddresses?
If you want to access just the IP address using this method, use $ip.IPAddress. Note this will return an array if there are multiple IPs.
Resolve-DnsName isn't part of PowerShell Core / PowerShell 7, so for cross platform you'll want System.Net.Dns.GetHostAddresses.
unlike [System.Net.Dns]::GetHostAddresses("yourhosthere"), this shows result with a small delay (somewhat like a second in my case)
@Castrohenge quite interestingly Resolve-DNSName successfully pulls the IP in cases where it is set to SkipAsSource (for instance specified in hosts) where GetHostAddresses() fails
21

Use Resolve-DnsName cmdlet.

Resolve-DnsName computername | FT Name, IPAddress -HideTableHeaders | Out-File -Append c:\filename.txt

PS C:\> Resolve-DnsName stackoverflow.com

Name                                           Type   TTL   Section    IPAddress
----                                           ----   ---   -------    ---------
stackoverflow.com                              A      130   Answer     151.101.65.69
stackoverflow.com                              A      130   Answer     151.101.129.69
stackoverflow.com                              A      130   Answer     151.101.193.69
stackoverflow.com                              A      130   Answer     151.101.1.69

PS C:\> Resolve-DnsName stackoverflow.com | Format-Table Name, IPAddress -HideTableHeaders

stackoverflow.com 151.101.65.69
stackoverflow.com 151.101.1.69
stackoverflow.com 151.101.193.69
stackoverflow.com 151.101.129.69

PS C:\> Resolve-DnsName -Type A google.com

Name                                           Type   TTL   Section    IPAddress
----                                           ----   ---   -------    ---------
google.com                                     A      16    Answer     216.58.193.78


PS C:\> Resolve-DnsName -Type AAAA google.com

Name                                           Type   TTL   Section    IPAddress
----                                           ----   ---   -------    ---------
google.com                                     AAAA   223   Answer     2607:f8b0:400e:c04::64
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1 Comment

While this code may answer the question, providing additional context regarding why and/or how this code answers the question improves its long-term value.
12

You could use vcsjones's solution, but this might cause problems with further ping/tracert commands, since the result is an array of addresses and you need only one.

To select the proper address, Send an ICMP echo request and read the Address property of the echo reply:

$ping = New-Object System.Net.NetworkInformation.Ping
$ip = $($ping.Send("yourhosthere").Address).IPAddressToString

Though the remarks from the documentation say:

The Address returned by any of the Send overloads can originate from a malicious remote computer. Do not connect to the remote computer using this address. Use DNS to determine the IP address of the machine to which you want to connect.

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3 Comments

@Backwards_Dave, apparently my habit of using parentheses to group an item is over excessive here. This next updated line gets you the same result, without the extra $(...): $ips = $ping.Send("yourhosthere").Address.IPAddressToString Thanks for asking. Less is more...
This works well on WIndows, but when running Powershell 7.0.3 on Ubuntu, the record returned was effectively empty and reported an IP address of 0.0.0.0.
Doesn't look like you can control whether you get a v6 or v4 address.
4

Working one liner if you want a single result from the collection:

$ipAddy = [System.Net.Dns]::GetHostAddresses("yahoo.com")[0].IPAddressToString;

hth

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1 Comment

I can confirm that this method works in both Powershell and Powershell 7.0.3 running on Ubuntu 20.04, and it seems to be a LOT faster than ll the other methods I've tested.
3

If you know part of the subnet (i.e. 10.3 in this example), then this will grab any addresses that are in the given subnet:

PS C:\> [System.Net.Dns]::GetHostAddresses("MyPC") | foreach { $_.IPAddressToString | findstr "10.3."}
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2 
$computername = $env:computername    
[System.Net.Dns]::GetHostAddresses($computername)  | where {$_.AddressFamily -notlike "InterNetworkV6"} | foreach {echo $_.IPAddressToString }
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1 Comment

While this code may answer the question, providing additional context regarding why and/or how this code answers the question improves its long-term value.
2

The Test-Connection command seems to be a useful alternative, and it can either provide either a Win32_PingStatus object, or a boolean value.

Documentation: https://msdn.microsoft.com/en-us/powershell/reference/5.1/microsoft.powershell.management/test-connection

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Comments

1

This worked well for my purpose

$ping = ping -4 $env:COMPUTERNAME
$ip = $ping.Item(2)
$ip = $ip.Substring(11,11)
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1 Comment

This method didn't work in Powershell 7.0.3 running on Ubuntu 20.04, it just hangs before it gets any responses.
0

You can use this code if you have a bunch of hosts in text file 

$a = get-content "C:\Users\host.txt"(file path) 

foreach ($i in $a )
    {
$i + "`n" + "==========================";[System.Net.Dns]::GetHostAddresses($i) 

}
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Comments

-1

The simplest way:

ping hostname

e.g.

ping dynlab938.meng.auth.gr

it will print: Pinging dynlab938.meng.auth.gr [155.207.29.38] with 32 bytes of data

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1 Comment

as the question is for powershell I would expect the answer to be a string/object containing the ip address
-1

try $address = 'HOST NAME'

Resolve-DnsName $address | Select-Object Name, IPAddress | Export-csv "C:\Temp\CompleteNSLookup.csv" -append -NoType

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1 Comment

how is this different from the other Answer that uses the same cmdlet?

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